The Carbon 14 Breath Test is a test that detects the presence of Helicobacter pylori infection in the body by breathing in and blowing out. The carbon 14-urea breath test is now often used as a rapid way to detect the presence of H. pylori infection. During the test, the blood is expelled through the respiratory tract, and then the exhaled gas is collected, and the carbon dioxide content is labeled by analyzing the carbon 14 in the exhaled breath to accurately determine whether H. pylori infection is present. It is highly accurate, economical and non-invasive, and has now become the method of choice for clinical diagnosis of H. pylori infection and post-treatment review. Patients should not worry too much about the carbon 14 breath test, which is a non-invasive, painless and relatively fast diagnostic method, so it will not bring adverse effects to the body.